(19)
(11) EP 1 517 028 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.05.2009 Bulletin 2009/20

(43) Date of publication A2:
23.03.2005 Bulletin 2005/12

(21) Application number: 04021846.3

(22) Date of filing: 14.09.2004
(51) International Patent Classification (IPC): 
F02D 41/02(2006.01)
F01N 9/00(2006.01)
 F02D 41/14(2006.01)
F01N 3/023(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL HR LT LV MK

(30) Priority: 17.09.2003 JP 2003325040
20.10.2003 JP 2003359635

(71) Applicant: NISSAN MOTOR CO., LTD.
Yokohama-shi Kanagawa-ken (JP)

(72) Inventors:
  • Kondou, Terunori
    Yokohama-shi Kanagawa 221-0044 (JP)
  • Kawashima, Junichi
    Yokosuka-shi Kanagawa 239-0835 (JP)
  • Tsutsumoto, Naoya
    Yokohama-shi Kanagawa 222-0032 (JP)
  • Otake, Makoto
    Yokohama-shi Kanagawa 241-0014 (JP)
  • Inoue, Takao
    Yokohama-shi Kanagawa 233-0002 (JP)
  • Ueno, Shouichirou
    Yokohama-shi Kanagawa 221-0001 (JP)
  • Koga, Toshimasa
    Yokohama-shi Kanagawa 221-0001 (JP)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Leopoldstrasse 4
80802 München
80802 München (DE)

   


(54) Regeneration control device for a diesel particulate filter


(57) To regenerate a diesel particulate filter (10) which traps particulate matter contained in the exhaust gas of a diesel engine (20), a controller (16) raises the temperature of the exhaust gas through fuel injection control of a fuel injector (23), and thus burns the particulate matter trapped in the filter (10). The controller (16) controls the fuel injector (23) to raise the temperature of the exhaust gas to a higher temperature as the amount of particulate matter trapped in the filter (10) decreases, thereby realizing effective regeneration while preventing the temperature of the filter (10) from becoming excessively high.







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